Shorten name:apa:gievn-family

[moewew]

Code from the useprefix=true branch is unchanged except for more arguments to name:delim and name:hook and one unnecessary %. The usprefix=false branch can be gotten rid of entirely.

[plk]

Appreciated, thanks - just no time at the moment so this is very helpful. Test doc is unaffected by this and so will be in next version.